Exercise device



FIG. 1 is a top, front, perspective view of an exercise device, showing our new design;

FIG. 2 is a bottom and side, perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan thereof;

FIG. 5 is a front elevational view, the rear view being a mirror image thereof; and,

FIG. 6 is a right-side view, the left-side being a mirror image thereof. 

CLAIM The ornamental design for an exercise device, as shown and described. 